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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '241') AND (category.subclass = '22') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '241'; Subclass is '22';

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T / S Patent Date Description Patentee Category Assigned To
 1915
U 1,143,885 June 22, 1915 Process for Making a Compound of Glass
Glass made from cullet with large amount of lime added for toughness		 BROOKFIELD, Henry M.
 Glass  

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